Millennial reconstruction of the global terrestrial climate: New approaches to the available data

Abstract

The main aim of the work was to reliably reconstruct the change in global temperature for the last 1000 years using new methods. We have considered two approaches to obtaining composite series based on symbolic analysis and on the so-called “principle of witnesses,” respectively. Based on the first approach, it has been indicated that the known reconstruction proposed by Moberg et al. is preferable in the scope of the accepted symbolic analysis variant among the available reconstructions. An approach based on the eyewitness principle made it possible to reveal the years when five different reconstructions give coordinated data on a 1000-year scale. The obtained new reconstructions are in good agreement with instrumental series data on the consistent time interval of their existence.